Gold nanoclusters with bright near-infrared photoluminescence
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10384574" target="_blank" >RIV/00216208:11320/18:10384574 - isvavai.cz</a>
Alternative codes found
RIV/61388963:_____/18:00489710
Result on the web
<a href="https://doi.org/10.1039/c7nr06050e" target="_blank" >https://doi.org/10.1039/c7nr06050e</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/c7nr06050e" target="_blank" >10.1039/c7nr06050e</a>
Alternative languages
Result language
angličtina
Original language name
Gold nanoclusters with bright near-infrared photoluminescence
Original language description
The increase in nonradiative pathways with decreasing emission energy reduces the luminescence quantum yield (QY) of near-infrared photoluminescent (NIR PL) metal nanoclusters. Efficient surface ligand chemistry can significantly improve the luminescence QY of NIR PL metal nanoclusters. In contrast to the widely reported but modestly effective thiolate ligand-to-metal core charge transfer, we show that metal-to-ligand charge transfer (MLCT) can be used to greatly enhance the luminescence QY of NIR PL gold nanoclusters (AuNCs). We synthesized water-soluble and colloidally stable NIR PL AuNCs with unprecedentedly high QY (similar to 25%) upon introduction of triphenylphosphonium moieties into the surface capping layer. By using a combination of spectroscopic and theoretical methods, we provide evidence for gold core-to-ligand charge transfer occurring in AuNCs. We envision that this work can stimulate the development of these unusually bright AuNCs for promising optoelectronic, bioimaging, and other applications.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nanoscale
ISSN
2040-3364
e-ISSN
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Volume of the periodical
10
Issue of the periodical within the volume
8
Country of publishing house
GB - UNITED KINGDOM
Number of pages
7
Pages from-to
3792-3798
UT code for WoS article
000426148500026
EID of the result in the Scopus database
2-s2.0-85042607015